For some reason, after taking out my DS battery and putting it back in, my DS has been experiencing some odd problems. 1. My DS sounds like it has full volume, but I have lowered the volume all the way down. 2. My L-button won't respond at all, even after blowing air into it. I was wondering if there was anyway for me to fix my problems. And if there isn't, how much it would be to send my DS to Nintendo for repair.